/*
 * Copyright 2009 Google Inc.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.pennychecker.eventbus;

import com.pennychecker.eventbus.Event.Type;

public class DefaultHandlerRegistration implements HandlerRegistration {

	private final HandlerManager manager;
	private final EventHandler handler;
	private final Type<?> type;

	/**
	 * Creates a new handler registration.
	 * 
	 * @param <H>
	 *            Handler type
	 * 
	 * @param manager
	 *            the handler manager
	 * @param type
	 *            the event type
	 * @param handler
	 *            the handler
	 */
	protected <H extends EventHandler> DefaultHandlerRegistration(
			HandlerManager manager, Type<H> type, H handler) {
		this.manager = manager;
		this.handler = handler;
		this.type = type;
	}

	EventHandler getHandler() {
		return handler;
	}

	/**
	 * Removes the given handler from its manager.
	 */
	@SuppressWarnings("unchecked")
	public void removeHandler() {
		manager.removeHandler((Type<EventHandler>) type, handler);
	}

}
